CLIMATE CHANGE TENDENCIES IN THE SECOND HALF OF THE TWENTIETH CENTURY IN NORTHEAST ASIA, ALASKA, AND NORTHWEST PACIFIC

V. I. Ponomarev, D. D. Kaplunenko, and V. V. Krokhin

This paper focuses on the seasonality of major patterns of climatic tendencies in surface air temperature and precipitation in Northeast Asia and Alaska and on SST trends in the Northwest Pacific in the second half of the 20th century. Linear trend of monthly precipitation and monthly mean SST and air temperature is estimated using the least-squares method and the nonparametric robust method based on rank statistics, which is applied when the normal distribution hypothesis is not valid. Consistency of tendencies in surface air temperature, precipitation, and SST in different seasons in subtropical, subarctic, marginal, and interior ocean or land areas are analyzed. Alternation of large-scale areas with positive and negative trends in both air temperature/precipitation and SST is shown for each month of the year.

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